With regard to oaths, An oath might be taken by one of the parties as an alternative to evidence. In court such an oath might be taken only on the proposal of the adversary; the litigant might not swear on his own initiative, although an oath might be taken voluntarily before the case came into court. The matter of the oath rested with the profferer, and the taking of such a proffered oath meant victory for the swearer. parties either offer to take an oath themselves, or refuse to accept the oath of their opponent, demand that their opponent should take an oath or refuse to comply with a similar demand when proffered to themselves. To offer to take an oath unconditionally without demanding that one's opponent should likewise take an oath is as a rule a sign of bad faith.

If, however, anyone should take this course, he will defend his action by appealing to the blamelessness of his life as rendering perjury on his part incredible, or by the solemn nature of the oath, with regard to which he will win all the greater credence, if without the least show of eagerness to take the oath he makes it clear that he does not shrink from so solemn a duty. Or again, if the case is such as to make this possible, he will rely on the trivial nature of the point in dispute to win belief, on the ground that he would not incur the risk of the divine displeasure when so little is at stake. Or, finally, he may in addition to the other means which he employs to win his case offer to take an oath as a culminating proof of a clear conscience.